2d. Sennett on Undescribed Plumages of N. Am. Birds. [January 



there is suitable food and water. It is very familial - about all the towns 

 and houses during" the colder months. 



I have observed it but once in the Catalina Mountains — on October 2, 

 1SS4, when I took a female (No. 1012), the only one seen, at an altitude 

 of 4500 feet. 



( To be continued.') 



SOME UNDESCRIBED PLUMAGES OF NORTH 

 AMERICAN BIRDS. 



BY GEORGE B. SENNETT. 



Sterna fuliginosa. Sooty Tern. 



I have been able to find but one attempt at describing the young of this 

 species while yet In the down, and that description must have applied to 

 older specimens than those before me. In 'The Ibis,' 186S, p. 286, Cap- 

 tain Sperling (whose description is referred to in B. B. & R. Water Birds, 

 Vol. II, p. 314) describes the young as follows: "'The young were of a 

 very light sooty color, both above and beneath, the ends of most of 

 the feathers having a white spot the size of a pea, which gives to them 

 a speckled appearance." Saunders, in P. Z. S., 1S76, p. 667. says : "The 

 young are dark on the underparts." This indicates his reference to a 

 more advanced stage of growth. 



Downy Stage: — Underparts white; throat and sides of neck speckled 

 dark gray and white. The whole upper parts are covered thickly with 

 sootv and white downy tufts, the former tipped with black points and the 

 latter with reddish fulvous points, giving to the whole upper surface a 

 mixed speckled appearance of black, white, and fulvous. In one speci- 

 men the dark color predominates and in the other the fulvous. 



Aythya collaris. Ring-necked Duck. 



Downy Stage: — Underparts very pale yellow; forehead and sides of 

 head and neck the same, washed with dark fulvous yellow; the same 

 yellow is on underside of wing and, alternating with brown, covers the 

 side of body. The crown, line down back of neck, wings, and line down 

 tibia to tarsus, whole of centre of back, and spaces between the yellow 

 patches, a rich brown. 



Colinus virginianus texanus. Texan Bob-white. 



First Plumage: — Half grown female, taken Aug. 18, in Texas. Throat 

 and lower belly creamy white; postocular stripe same color barred with 

 brown ; crown ashy brown with broad median line of darker brown ; auric- 



